Trophic structure of benthic communities in the Cabo Frio upwelling system (southeastern Brazilian shelf): a temporal study using stable isotope analysis

Corbisier, Thaís Navajas; Petti, Mônica Angélica Varela; Soares, Lucy Satiko Hashimoto; Muto, Elizabeti Yuriko; Bromberg, Sandra; Valiela, Iván

doi:10.3354/meps10947

Cited by 15 publications

(7 citation statements)

References 76 publications

(94 reference statements)

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“…The sampled sediments in the PEC and CIELS presented δ 13 C values suggesting a primarily terrestrial carbon source, and were lower than those in adjacent northern coastal areas (e.g. Flamengo Sound, São Paulo and Cabo Frio, Rio de Janeiro) (Corbisier et al, 2006(Corbisier et al, , 2014.…”

Section: Baseline Values Of δ 13 C and δ 15 N And Ecological Relationmentioning

confidence: 80%

Trophic dynamics in two South American estuaries encompassing industrial development and a biodiversity hotspot

Trevizani

Domit

Broadhurst

et al. 2019

Aquatic Conservation

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1. Estuaries are critical to the life histories and development of many marine species, and support some of the most productive aquatic ecosystems. But, owing to their geographic accessibility, many estuaries face considerable anthropogenic threats, which can be exacerbated in developing nations. 2. Understanding the ecological implications of anthropogenic activities as a precursor to dedicated conservation activities requires comprehensive assessments of baseline trophic relationships. This study addresses a shortfall in such information for two tropical, coastal ecosystems globally identified as priority areas for biodiversity conservation: the Paranaguá estuarine complex and Cananéia-Iguape estuarine lagoon system in southern Brazil. 3. Ecological relationships were investigated through carbon and nitrogen stable isotope (δ 13 C and δ 15 N) determination in sediments, plant fragments and the muscle tissues of marine species occupying different trophic levels, including benthic invertebrates, This article is protected by copyright. All rights reserved. This is the author manuscript accepted for publication and has undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as

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Section: Baseline Values Of δ 13 C and δ 15 N And Ecological Relationmentioning

confidence: 80%

Trophic dynamics in two South American estuaries encompassing industrial development and a biodiversity hotspot

Trevizani

Domit

Broadhurst

et al. 2019

Aquatic Conservation

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show abstract

“…This event happens successively during spring and summer in this region, and its frequency is known to have high inter-annual variability [ 16 ]. On a seasonal scale, the effects of the upwelling on the phytoplankton standing stock are strongly dependent upon the frequency and intensity of the nutrient supply [ 11 , 26 , 27 ], mainly during the spring bloom. However, previous evidences in Cabo Frio region [ 11 ] reveal that in some years there are unexpected bottom-up effect that cannot be fully explained by seasonal upwelling.…”

Section: Introductionmentioning

confidence: 99%

Inter-annual cascade effect on marine food web: A benthic pathway lagging nutrient supply to pelagic fish stock

2017

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Currently, spatial and temporal changes in nutrients availability, marine planktonic, and fish communities are best described on a shorter than inter-annual (seasonal) scale, primarily because the simultaneous year-to-year variations in physical, chemical, and biological parameters are very complex. The limited availability of time series datasets furnishing simultaneous evaluations of temperature, nutrients, plankton, and fish have limited our ability to describe and to predict variability related to short-term process, as species-specific phenology and environmental seasonality. In the present study, we combine a computational time series analysis on a 15-year (1995–2009) weekly-sampled time series (high-resolution long-term time series, 780 weeks) with an Autoregressive Distributed Lag Model to track non-seasonal changes in 10 potentially related parameters: sea surface temperature, nutrient concentrations (NO2, NO3, NH4 and PO4), phytoplankton biomass (as in situ chlorophyll a biomass), meroplankton (barnacle and mussel larvae), and fish abundance (Mugil liza and Caranx latus). Our data demonstrate for the first time that highly intense and frequent upwelling years initiate a huge energy flux that is not fully transmitted through classical size-structured food web by bottom-up stimulus but through additional ontogenetic steps. A delayed inter-annual sequential effect from phytoplankton up to top predators as carnivorous fishes is expected if most of energy is trapped into benthic filter feeding organisms and their larval forms. These sequential events can explain major changes in ecosystem food web that were not predicted in previous short-term models.

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“…Os sedimentos costeiros recebem material orgânico de fonte autóctone (derivadas de fontes in situ, como plantas que crescem na superfície de sedimentos) e fontes alóctones (matéria orgânica transportada para o sedimento de outro lugar, como com a maré ou um rio), e os sedimentos dos três estuários estudados apresentaram δ 13 C que apontam para origem terrestre da matéria orgânica. As razões isotópicas de carbono obtidas nos sedimentos dos CEP, SELCI e CESSV foram maiores que as observadas na região costeira de Cabo Frio (Rio de Janeiro) e na Enseada do Flamengo (Ubatuba, SP), demonstrando a influência mais forte de matéria orgânica terrígena e a influência costeira (valores de δ 13 C são mais elevados) nos estuários avaliados Corbisier et al, 2006Corbisier et al, , 2014Das et al, 2000Das et al, , 2003Dauby et al, 1998;Di Beneditto e Monteiro, 2016;Hardt et al, 2013;Hobson et al,1995;Hobson e Welch, 1992;Newsome et al, 2010;Pinela et al, 2010;Soares et al, 2014).…”

Section: Objetivosunclassified

“…Este aumento das concentrações de Hg com o aumento do nível trófico também foi relatado por diversos estudos, sendo significativa a biomagnificação (Campbell et al, 2005;Di Beneditto et al, 2012;Gray, 2002;Kehrig et al, 2013;Muto et al, 2014;Signa et al, 2017). Porém, em ecossistemas marinhos tropicais, as baixas taxas de biomagnificação têm sido atribuídas à complexidade das teias alimentares, com alta diversidade de espécies, implicando em valores de δ 15 N semelhantes e concentrações de Hg variáveis entre espécies, levando somente a uma tendência de biomagnificação (Al-Reasi et al, 2007).…”

Section: Análises Integradas Entre Metais Pesados E Razões Isotópicasunclassified

Bioacumulação e biomagnificação de metais pesados em teias tróficas de estuários do sul-sudeste do Brasil

Trevizani¹

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Trophic structure of benthic communities in the Cabo Frio upwelling system (southeastern Brazilian shelf): a temporal study using stable isotope analysis

Cited by 15 publications

References 76 publications

Trophic dynamics in two South American estuaries encompassing industrial development and a biodiversity hotspot

Trophic dynamics in two South American estuaries encompassing industrial development and a biodiversity hotspot

Inter-annual cascade effect on marine food web: A benthic pathway lagging nutrient supply to pelagic fish stock

Bioacumulação e biomagnificação de metais pesados em teias tróficas de estuários do sul-sudeste do Brasil

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